Image: GB-Definition-Map

Description: The Great Basin can be defined hydrographically (in purple), topographically (in blue), or biologically (in black).
Title: GB-Definition-Map
Credit: http://www.nps.gov/grba/planyourvisit/the-great-basin.htm
Author: U.S. National Park Service
Permission: This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No